As the earth revolved around the sun, its orbit is in a perfect location. Any closer and water would evaporate, and any further away from the sun and water would freeze. Liquid water is essential for life. This perfect orbital zone for life is known as the . *
Bio-orbital Zone
Zone of Biology
Goldilocks Zone
Twilight Zone

Compare the quantity in column a with the quantity in column b. pa p a is tangent to the circle at a. column a column b ap a p ax a x question 4 options: the two quantities are equal. the quantity in column a is greater. the relationship cannot be determined from the information given. the quantity in column b is greater.